Science : Ch 11 – The Human Eye and the Colourful World

Which of the following phenomena contributes signifcantly to the reddish appearance of the sun at sunrise or sunset?

The bluish colour of water in deep sea is due to:

Arpit remarked that he has seen wavering of objects when seen through a stream of hot air rising above a tandoor or a fire. He said that the air just above the fire becomes hotter than the air further higher up. He further said that this wavering can also be seen in the earth’s atmosphere as the earth’s atmosphere is not evenly distributed ,What is the total time diference on duration of day on earth?

Milk is a colloid that contains globules of fat and protein. When a beam of light is directed at a glass of milk the light is scattered. That is a great example

When sunlight passes through a canopy of a dense forest, tiny water droplets in the water scatter light.This is an example of

Effect produced by scattering of light by the atmosphere.

The effect seen Color of the sky during Sunrise and Sunset

The defect the eye cannot focus objects both horizontally and vertically at the same time

Rainbow is caused due to

The SI unit of Power of a lens is

The colour of scattered light depends on the

The sky appears black to an astronaut as there is no

Visible spectrum is the band of coloured components of a

The refractive index of glass is least for

The refractive index of glass is largest for